[Payment Request] Refactors edit view controller

ios/chrome/browser/ui/payments/payment_request_edit_view_controller.h

Index: ios/chrome/browser/ui/payments/payment_request_edit_view_controller.h
diff --git a/ios/chrome/browser/ui/payments/payment_request_edit_view_controller.h b/ios/chrome/browser/ui/payments/payment_request_edit_view_controller.h
index bc1c27187f9a89ed631b9d0e5f64f31f3a4e7938..4352f8ed50c9450808fc129d0d1041df01d5427b 100644
--- a/ios/chrome/browser/ui/payments/payment_request_edit_view_controller.h
+++ b/ios/chrome/browser/ui/payments/payment_request_edit_view_controller.h
@@ -26,6 +26,16 @@ extern NSString* const kWarningMessageAccessibilityID;
             (PaymentRequestEditViewController*)controller
                           didSelectField:(EditorField*)field;
 
+// Notifies the delegate that the user has finished editing the editor fields.
+- (void)paymentRequestEditViewController:
+            (PaymentRequestEditViewController*)controller
+                  didFinishEditingFields:(NSArray<EditorField*>*)fields;
+
+// Notifies the delegate that the user has chosen to discard entries in the
+// editor fields and return to the previous screen.
+- (void)paymentRequestEditViewControllerDidCancel:
+    (PaymentRequestEditViewController*)controller;
+
 @end
 
 // Validator protocol for PaymentRequestEditViewController.